Which is the hottest month in Colorado?

The hottest time of year in Denver, Colorado is normally July. Expect maximum daytime temperatures to reach 31°C with moderate heat and humidity.

Best time to visit Colorado

Q: When is the best time to visit Colorado?

The best time to visit Colorado (Denver) is May and June based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Q: Which month has the most rain in Colorado?

In terms of rainfall, May is usually the wettest month in Denver, Colorado with 71mm on average. There are normally 10 days in May with some rain.

Q: When is it sunniest in Colorado?

The sunniest time of year in Denver, Colorado is normally September with bright sunshine on average for 73% of daylight hours; that's 9 hours of sunshine per day.

Find the best time to visit Colorado and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Colorado by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Top Colorado destinations

Below are the temperatures expected today at popular countries, regions and places in Colorado. Select a destination to compare today's forecast with average weather conditions.

All Colorado destinations

When is the best time to visit Colorado?

The best time to visit Colorado (Denver) is May and June based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

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2
Mar
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Apr
5
May
5
Jun
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Jul
4
Aug
4.5
Sep
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Oct
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Nov
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Dec

Change criteria

Max Day Temperature (°C)

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Jan
8
Feb
11
Mar
17
Apr
22
May
27
Jun
31
Jul
30
Aug
25
Sep
19
Oct
12
Nov
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Dec

Hours of Sunshine (daily)

7
Jan
8
Feb
8
Mar
9
Apr
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May
11
Jun
11
Jul
10
Aug
9
Sep
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Oct
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Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Colorado (Denver) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

More about Colorado

Explore our complete guide to Colorado with the latest travel advice for travellers and holidaymakers including official updates and local travel tips for Colorado.

Essential travel guide
Travel guidance
Travel health
Travel features
Top travel deals
FAQs

Colorado travel guide - essential info

Below is a beginner's guide to Colorado with essential travel facts such as dominant language spoken, typical flight time from the UK and the local currency. You can also check whether visas are required and what plug adapter you need to pack.

Colorado - quick facts
Flight time^✝	10 hours
Time difference	UK -7 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes

Why visit Colorado?

Considering a holiday to the Colorado? Here are some of the very good reasons it makes such a wonderful holiday destination such as for its nature to ensure you get the most out of your 2025/2026 escape.

Nature

Colorado tourist information

Colorado Tourism Office

✝ = Typical flight time from the UK and visa requirements for UK travellers.

Travelling to Colorado?
Hotels Flights eSIMs Travel insurance

Colorado travel guidance

Check the latest travel guidance and advice on visiting Colorado from official government sources (in english) from around the world including entry requirements and travel restrictions.

UK traveller advice for the Colorado - UK FCDO
Irish traveller advice for the Colorado - Department of Foreign Affairs, Ireland
Canadian travel advice for the Colorado - Government of Canada
Safe travel advisories for the Colorado - Ministry of Foreign Affairs, New Zealand
Smarter traveller advice for the Colorado - Department of Foreign Affairs, Australia

Learn more about the current safety and security risks from terrorism, natural disasters and more. Read about the local laws and customs to consider when travelling around Colorado.

Note: UK FCDO - UK Foreign, Commonwealth & Development Office

Colorado travel health

Find out more about staying safe when travelling to Colorado with the latest guidance on required vaccinations and recommended medication to take with you.

Vaccines & medicines for the Colorado - CDC
Health & vaccinations for the Colorado - TravelHealthPro, NaTHNac
How to stay safe & healthy in the Colorado - Fit for Travel, Public Health Scotland

Check out the general travel tips for staying safe and healthy in Colorado, risks of preventable diseases and what to pack.

Note: CDC - Centers for Disease Control and Prevention

Colorado travel features

Do you want to learn more about Colorado? Read our latest features covering travel tips and insider destination guides on where to go and what to do in Colorado.

Explore the history, art and culture of Denver, Colorado

Colorado FAQs

Read our frequently asked questions about travelling to Colorado including the current entry restrictions, driving side, electrical plugs used and much more.

Which month has the most rain in Colorado?

In terms of rainfall, January is usually the wettest month in Denver, Colorado with 0mm on average. There are normally no days in January with some rain.

When is it sunniest in Colorado?

The sunniest time of year in Denver, Colorado is normally January with bright sunshine on average for 0% of daylight hours; that's 0 hours of sunshine per day.

When is the sea warmest in Colorado?

The sea is usually at its warmest in Denver, Colorado in January when the water temperature reaches 0°C.

What is the flight time to Colorado from the UK?

The flight time to Colorado from the UK is typically 10 hours.

What is the time difference between Colorado and the UK?

The time difference between Colorado and the UK is UK time-7 hours.

What is the main language spoken in Colorado?

The main language spoken in Colorado is English.

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What is the currency in Colorado?

The currency in Colorado is the US Dollar (USD).

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Which plugs are used in Colorado?

Colorado uses electrical plug type A + B (120 Volts).

Which side of the road do they drive on in Colorado?

They drive on the right side of the road in Colorado.

Find out more about driving in USA with International Drivers Association^*.

Do you need a visa for Colorado?

Yes, UK passport holders do need a visa to enter Colorado.

Check USA visa requirements for all passport holders with VisaHQ^*.

Colorado travel deals

Holidays to Colorado

Check out the latest deals, discount codes and special offers on holidays to Colorado in 2025/2026. Pay low deposits and save with last minute holiday availability and free kids places.